ADVANCED DRYING SYSTEMSEstablished in the year, 1999, our company, Advanced Drying Systems, is engaged in the sphere of manufacturing and exporting a wide range of drying plants, spray drying plants, drying chambers, laboratory spray dryers, air dispersion dryers, pilot dryers, rotary atomizer, industrial heaters, spin flash dryers, fluid bed dryers, vibrated fluid bed dryers etc. These are developed using advanced manufacturing technology that ensures optimal durability and functionality standards of the equipment. We have established a sophisticated manufacturing unit that is equipped with latest manufacturing machines for meeting the fabrication needs of plants. Our qualified quality controllers further assist us in maintaining the quality throughout the process ensuring superior functionality of the industrial heaters, spin flash dryers, fluid bed dryers, vibrated fluid bed dryers and other equipment.
To suit clients’ requirements, we also provide customized solutions within committed time frame. Further, we also offer effective and prompt after sale service so that our clients can make optimum use of the offered equipment. Our client centric approach has also helped us in attracting a large number of clients across the world. We have established a firm presence in our industry sector.
We offer a wide range of dryers, rotary atomizer, heaters, evaporator, powder separation unit and nozzle systems. These are manufactured using latest process technology and have been appreciated for their advanced mechanism ensuring optimum functionality standards. We use graded stainless steel and mild steel for the fabrication process ensuring high durability and corrosion resistance of the entire range of heaters, dryers, evaporators and other equipment. Further, we also have an in-house quality testing facility that allows us to check these systems on well defined quality parameters.
Some of the features of our dryers, heaters, evaporators and other equipment are:
The entire range of drying plants is widely installed in industries such as chemical industry, effluent treatment plants, pharmaceutical and others.
dryers offer an effective and efficient method of removal of surface
or on bound moisture from a feed product. Spray dryers are pneumatic
driers having very low residence time within the equipment, thus
flashing off the moisture from the feed. They are used for efficient
drying of moist powders. Slurry, filter cakes, granules, etc. They
operate on varying throughput rates from few hundred kilograms per
hour to hundreds of tons per hour. Low temperature dehumidified air
could be used for heat sensitive products to hot gases with
temperature up to 500 - 600 deg. C. for temperature resistant
drying equipment comprises of the feeding section normally a screw
feeder, rotary valve, vibratory feeder, etc. Which feeds the wet
product in a controlled fashion into the throat of the flash drier,
where it is mixed with hot air produced by a hot air generator or
a method of producing a dry powder from a liquid or slurry by rapidly
drying with a hot gas. This is the preferred method of drying of many
thermally-sensitive materials such as foods and pharmaceuticals.
A consistent particle size distribution is a reason for spray drying
some industrial products such as catalysts. Air is the heated drying
medium; however, if the liquid is a flammable solvent such
as ethanol or
the product is oxygen-sensitive then nitrogen is
spray dryers use some type of atomizer or spray
disperse the liquid or slurry into a controlled drop size spray. The
most common of these are rotary disk and single-fluid high pressure
swirl nozzles. Atomizer wheels are known to provide broader particle
size distribution, but both methods allow for consistent distribution
of particle size. Alternatively,
for some applications two-fluid or ultrasonic
used. Depending on the process needs, drop sizes from 10 to 500 �m
can be achieved with the appropriate choices. The most common
applications are in the 100 to 200 �m diameter range. The dry
powder is often free-flowing.
most common type of spray dryers are called single effect. There is a
single source of drying air at the top of the chamber (see n�4 on
the diagram). In most cases the air is blown in the same direction as
the sprayed liquid (co-current). A fine powder is produced, but it
can have poor flow and produce a lot of dust. To overcome the dust
and poor flow of the powder, a new generation of spray dryers called
multiple effect spray dryers have been produced. Instead of drying
the liquid in one stage, drying is done through two steps: the first
at the top (as per single effect) and the second with an integrated
static bed at the bottom of the chamber. The bed provides a humid
environment which causes smaller particles to clump, producing more
uniform particle sizes, usually within the range of 100 to 300 �m.
These powders are free-flowing due to the larger particle size.
fine powders generated by the first stage drying can be recycled in
continuous flow either at the top of the chamber (around the sprayed
liquid) or at the bottom, inside the integrated fluidized
The drying of the powder can be finalized on an external vibrating
hot drying gas can be passed in as a co-current, same direction as
sprayed liquid atomizer, or counter-current, where the hot air flows
against the flow from the atomizer. With co-current flow, particles
spend less time in the system and the particle separator (typically a
cyclone device). With counter-current flow, particles spend more time
in the system and is usually paired with a fluidized bed system.
Co-current flow generally allows the system to operate more
to spray dryers are:
a more-expensive batch process for products that degrade in spray
drying. Dry product is not free-flowing.
a less-expensive continuous process for low-value products; creates
flakes instead of free-flowing powder.
combustion dryer: A less-expensive continuous process that can
handle higher viscosities and solids loading than a spray dryer, and
that sometimes gives a freeze-dry quality powder that is
illustration of spray drying process.
spray dryer takes a liquid stream and separates the solute or
suspension as a solid and the solvent into a vapor. The solid is
usually collected in a drum or cyclone. The liquid input stream is
sprayed through a nozzle into a hot vapor stream and vaporized.
Solids form as moisture quickly leaves the droplets. A nozzle is
usually used to make the droplets as small as possible, maximizing
heat transfer and the rate of water vaporization. Droplet sizes can
range from 20 to 180 μm depending on the nozzle. There
are two main types of nozzles: high pressure single fluid nozzle (50
to 300 bars) and two-fluid nozzles: one fluid is the liquid to dry
and the second is compressed gas (generally air at 1 to 7 bars).
dryers can dry a product very quickly compared to other methods of
drying. They also turn a solution, or slurry into a dried powder in a
single step, which can be advantageous as it simplifies the process
and improves profit margins.
the slurry enters the tower, it is atomized. Partly because of the
water and partly because of the hydrophobic/hydrophilic interactions
between the amphipathic carrier, the water, and the load, the
atomized slurry forms micelles.
The small size of the drops (averaging 100 micrometers in
diameter) results in a relatively large surface area which dries
quickly. As the water dries, the carrier forms a hardened shell
around the load.
loss is usually a function of molecular weight. That is, lighter
molecules tend to boil off in larger quantities at the processing
temperatures. Loss is minimized industrially by spraying into taller
towers. A larger volume of air has a lower average humidity as the
process proceeds. By the osmosis principle,
water will be encouraged by its difference in fugacities in
the vapor and liquid phases to leave the micelles and enter the air.
Therefore, the same percentage of water can be dried out of the
particles at lower temperatures if larger towers are used.
Alternatively, the slurry can be sprayed into a partial vacuum. Since
the boiling point of a solvent is the temperature at which the vapor
pressure of the solvent is equal to the ambient pressure, reducing
pressure in the tower has the effect of lowering the boiling point of
application of the spray drying encapsulation technique is to prepare
"dehydrated" powders of substances which do not have any
water to dehydrate. For example, instant drink
spray dries of the various chemicals which make up the beverage. The
technique was once used to remove water from food products; for
instance, in the preparation of dehydrated milk. Because the milk was
not being encapsulated and because spray drying causes thermal
milk dehydration and similar processes have been replaced by other
dehydration techniques. Skim milk
still widely produced using spray drying technology around the world,
typically at high solids concentration for maximum drying efficiency.
Thermal degradation of products can be overcome by using lower
operating temperatures and larger chamber sizes for increased
research is now suggesting that the use of spray-drying techniques
may be an alternative method for crystallization of amorphous powders
during the drying process since the temperature effects on the
amorphous powders may be significant depending on drying residence
powder, coffee, tea, eggs, cereal, spices, flavorings,
and starch derivatives, vitamins, enzymes, stevia, nutracutical,
medical ingredients, additives